Recommendations for cron-like scheduling in Grails: run method once every hour

Suppose I want to run the following method foo() once every hour in Grails:

class FooController {
  public static 开发者_如何学运维void foo() {
    // stuff that needs to be done once every hour (at *:00)
  }
}

What is the easiest/recommended way to set up such cron-like scheduling in Grails?

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Quartz plugin: http://grails.org/plugin/quartz

Adds Quartz job scheduling features...

Starting from 1.0-RC3, this plugin uses Quartz 2.1.x, and no longer uses Quartz 1.8.x. If you want to use Terracotta 3.6+, this is the plugin to use. This is because the other 'quartz2' plugin doesn't use JobDetailsImpl class, which Terracotta 3.6 requires. See https://jira.terracotta.org/jira/browse/QTZ-310 for more info...

Full documentation can be found here

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If you don't want to add another plugin dependency, an alternative is to use the JDK Timer class. Simply add the following to Bootstrap.groovy

def init = { servletContext ->
    // The code for the task should go inside this closure
    def task = { println "executing task"} as TimerTask

    // Figure out when task should execute first
    def firstExecution = Calendar.instance

    def hour = firstExecution.get(Calendar.HOUR_OF_DAY)
    firstExecution.clearTime()
    firstExecution.set(Calendar.HOUR_OF_DAY, hour + 1)

    // Calculate interval between executions
    def oneHourInMs = 1000 * 60 * 60

    // Schedule the task
    new Timer().scheduleAtFixedRate(task, firstExecution.time, oneHourInMs) 
}